User contributions for Bob K

25 November 2024

• 19:0019:00, 25 November 2024 diff hist −11 File:Correlation function.svg →{{int:filedesc}}: improve caption current

23 October 2024

• 12:3712:37, 23 October 2024 diff hist −11 File:WOLA channelizer example.png →{{int:filedesc}}: update a link current

18 September 2024

• 13:5913:59, 18 September 2024 diff hist 0 File:Fourier transform, Fourier series, DTFT, DFT.svg Bob K uploaded a new version of File:Fourier transform, Fourier series, DTFT, DFT.svg current

26 August 2024

• 17:2217:22, 26 August 2024 diff hist +111 File:Periodogram.svg →{{int:filedesc}} current

23 June 2024

• 13:2413:24, 23 June 2024 diff hist +286 File:Window function and frequency response - Planck-taper (epsilon = 0.25).svg add templates {{Wrong license}} and {{derived from}} current

25 March 2024

• 20:2220:22, 25 March 2024 diff hist +120 File:Spectral views of zero-fill and interpolation by lowpass filtering.pdf →{{int:filedesc}} current
• 20:1220:12, 25 March 2024 diff hist 0 File:Spectral views of zero-fill and interpolation by lowpass filtering.pdf Bob K uploaded a new version of File:Spectral views of zero-fill and interpolation by lowpass filtering.pdf

24 March 2024

• 23:0823:08, 24 March 2024 diff hist 0 File:Spectral views of zero-fill and interpolation by lowpass filtering.pdf Bob K uploaded a new version of File:Spectral views of zero-fill and interpolation by lowpass filtering.pdf
• 22:3622:36, 24 March 2024 diff hist 0 File:Spectral views of zero-fill and interpolation by lowpass filtering.svg Bob K uploaded a new version of File:Spectral views of zero-fill and interpolation by lowpass filtering.svg current

22 January 2024

• 17:2417:24, 22 January 2024 diff hist +84 File:Fourier transform of oscillating function.svg →{{int:filedesc}}: add link to a supporting file

19 January 2024

• 13:5613:56, 19 January 2024 diff hist +138 File:Onfreq.svg populate Other versions field current
• 13:3413:34, 19 January 2024 diff hist +81 File:Function ocsillating at 3 hertz.svg →{{int:filedesc}}: populate other versions field current

8 January 2024

• 14:2114:21, 8 January 2024 diff hist +49 m File:Onfreq.png →{{int:filedesc}}: tweek Octave script

3 January 2024

• 13:3113:31, 3 January 2024 diff hist +233 N Commons:Deletion requests/File:Onfreq i2p.svg Starting deletion request

2 January 2024

• 19:2719:27, 2 January 2024 diff hist +1,550 File:Onfreq.png →{{int:filedesc}}: add other versions and source code
• 18:5718:57, 2 January 2024 diff hist −94 File:Onfreq.png →{{int:license-header}}
• 18:4918:49, 2 January 2024 diff hist +272 File:Onfreq.png ‎Added [en] caption: A signal at 3 Hz, and the corresponding integrands of the Fourier transform at 3 Hz.
• 18:4918:49, 2 January 2024 diff hist +360 N File:Onfreq.png Uploaded own work with UploadWizard

28 November 2023

• 14:3214:32, 28 November 2023 diff hist 0 File:Fourier series illustration.svg Bob K reverted File:Fourier series illustration.svg to an old version

16 November 2023

• 14:4114:41, 16 November 2023 diff hist +924 File:Window function and frequency response - Rectangular.svg →{{int:filedesc}}: perl comments by Martin Bondy current

19 March 2023

• 15:3015:30, 19 March 2023 diff hist +112 File:Offfreq i2p.svg ‎Added [en] caption: Complex-valued function modulating a complex sinusoid
• 15:2915:29, 19 March 2023 diff hist +239 File:Offfreq i2p.svg add {{rename}} template

17 February 2023

• 13:2713:27, 17 February 2023 diff hist +355 N Commons:Deletion requests/File:Complex-valued function modulating a complex sinusoid.svg Starting deletion request
• 13:2713:27, 17 February 2023 diff hist +266 File:Offfreq i2p.svg Nominating for deletion

16 February 2023

• 16:5216:52, 16 February 2023 diff hist +451 N File:Offfreq i2p.svg Uploaded a work by Thenub314 from https://commons.wikimedia.org/wiki/File:Offfreq.svg Changes: 2πi is replaced by i2π, preferred by some. with UploadWizard

6 February 2023

• 13:0213:02, 6 February 2023 diff hist +601 File:Normalized frequency example.svg →{{int:filedesc}}: code comments
• 00:3000:30, 6 February 2023 diff hist +3 File:Amplitude & phase vs frequency for a 3-term boxcar filter.gif →{{int:filedesc}}
• 00:2900:29, 6 February 2023 diff hist +3 File:Fourier transform, Fourier series, DTFT, DFT.gif →{{int:filedesc}} current
• 00:2900:29, 6 February 2023 diff hist +3 File:Frequency response of 3-term boxcar filter.gif →{{int:filedesc}} current
• 00:2800:28, 6 February 2023 diff hist +3 File:Processing losses for 3 window functions.gif →{{int:filedesc}} current
• 00:2700:27, 6 February 2023 diff hist +3 File:Frequency spectrum of a sinusoid and its quantization noise floor.gif →{{int:filedesc}} current
• 00:2600:26, 6 February 2023 diff hist +3 File:In-phase and quadrature components of angle modulation.gif →{{int:filedesc}} current
• 00:2400:24, 6 February 2023 diff hist +3 File:8-point windows.gif →{{int:filedesc}}
• 00:1000:10, 6 February 2023 diff hist +3 File:Aliasing between a positive and a negative frequency.png →{{int:filedesc}}
• 00:1000:10, 6 February 2023 diff hist +3 File:Overlap-save algorithm.png →{{int:filedesc}}
• 00:0000:00, 6 February 2023 diff hist +3 File:Circular convolution example.png →{{int:filedesc}}
• 00:0000:00, 6 February 2023 diff hist +3 File:Odd-length, "DFT-even" Hann window & spectral leakage.png →{{int:filedesc}}

5 February 2023

• 23:5923:59, 5 February 2023 diff hist +3 File:Spectral leakage from two 8-point Gaussian windows.png →{{int:filedesc}} current
• 23:5723:57, 5 February 2023 diff hist +3 File:Comparison of periodogram and Welch methods of spectral density estimation.png →{{int:filedesc}}
• 23:5723:57, 5 February 2023 diff hist +3 File:Example of spectral "folding" caused by sampling a real-valued waveform.png →{{int:filedesc}} current
• 23:5623:56, 5 February 2023 diff hist +3 File:DFT-even Hann window & spectral leakage.png →{{int:filedesc}}
• 23:5523:55, 5 February 2023 diff hist −1 File:Spectral leakage from two 8-point Poisson windows.png →{{int:filedesc}} current
• 23:5323:53, 5 February 2023 diff hist +3 File:Spectral leakage from two 8-point Hamming windows.png →{{int:filedesc}} current
• 23:5323:53, 5 February 2023 diff hist +3 File:8-point Hann windows.png →{{int:filedesc}}
• 23:5223:52, 5 February 2023 diff hist +3 File:Illustration of causal and non-causal filters.png →{{int:filedesc}} current
• 23:4723:47, 5 February 2023 diff hist +3 File:Kaiser-Window-Spectra.svg →{{int:filedesc}} current
• 23:4623:46, 5 February 2023 diff hist +3 File:Kbd-window.svg →{{int:filedesc}} current
• 23:4523:45, 5 February 2023 diff hist +3 File:KaiserWindow.svg →{{int:filedesc}} current
• 23:4423:44, 5 February 2023 diff hist +3 File:Comparison of symmetric and periodic Gaussian windows.svg →{{int:filedesc}}
• 23:4323:43, 5 February 2023 diff hist +3 File:Spectral leakage caused by "windowing".svg →{{int:filedesc}} current